H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 61/54 (2006.01) H01J 61/04 (2006.01)
Patent
CA 2659481
A high-intensity discharge lamp includes a discharge vessel made of an insulator, and a cathode and anode. A V-shaped gap is provided between the anode and a first region of the vessel directly adjacent to where the anode separates from an interior surface of the vessel. A secondary cathode is provided on an exterior surface of the vessel at the first region, where the secondary cathode is positioned so that the V-shaped gap and the first region are between the secondary cathode and the anode. An electric field at the first region produces a dielectric barrier discharge (DBD) which generates ultraviolet (UV) and vacuum ultraviolet VUV photons that impinge on the cathode and initiate a breakdown between the cathode and anode.
Adler Helmar
Kostrun Marijan
Osram Sylvania Inc.
Smart & Biggar
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